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Tube fitting users have long recognized that proper tube and tube fitting system function requires good tubing preparation followed by the use of correct installation procedures. Improper ferrule set in any flareless tube and fitting system may be the result of burrs created during the tube cutting process, improper tube insertion into the fitting, or inadequate tightening of the fitting nut. In order to maximize tube and fitting system performance and safety, HOKE offers several tool options combined with detailed installer training. The Gyrolok® Marking Tool provides the installer with an economical means of ensuring both proper tubing insertion into the fitting and adequate nut tightening.
Unit of Measure

Specifications

SIZE

 N/A 1

Usage Instructions

N/A 1.Squarely cut tubing, preferably with a tube cutter, and then deburr both inside and outside diameters as necessary.
2. Firmly insert tubing into the tool as far as possible.
3. Mark the tubing, as shown, with a pencil or FINE POINT marker utilizing low chloride ink.
4. Firmly insert the marked tubing into the Gyrolok® fitting to which it will be assembled. Finger-tighten the nut. The mark should NOT be visible at this point. If not visible, continue to step 5. If any part of the mark is visible above the Gyrolok® nut after only fingertightening, the tubing is either not properly seated within the fitting or a ferrule is missing. Disassemble and determine cause.
5. If the mark is not visible after finger-tightening, continue by following appropriate Gyrolok® assembly instructions for tubing O.D. and wall thickness.

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